10023121312 has 12 divisors (see below), whose sum is σ = 19733020146. Its totient is φ = 5011560640.

The previous prime is 10023121301. The next prime is 10023121321. The reversal of 10023121312 is 21312132001.

It can be written as a sum of positive squares in only one way, i.e., 6273273616 + 3749847696 = 79204^2 + 61236^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156611239 + ... + 156611302.

Almost surely, 2^10023121312 is an apocalyptic number.

It is an amenable number.

10023121312 is a deficient number, since it is larger than the sum of its proper divisors (9709898834).

10023121312 is an equidigital number, since it uses as much as digits as its factorization.

10023121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313222551 (or 313222543 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10023121312 its reverse (21312132001), we get a palindrome (31335253313).

The spelling of 10023121312 in words is "ten billion, twenty-three million, one hundred twenty-one thousand, three hundred twelve".